I've tried 2 so far: CD-Wow/Lovefilm and Screen Select.
IMHO screen select is better; easier to find movies on there, when you select boxsets they will despatch them in order, and they despatch them quicker than LoveFilm.
Experiences with LoveFilm include: 2 day delay on average between returning movies and them sending out the next batch, although they do send all 3 out at once.
Ordering boxsets mean you need to change your rental queue so that only disc 1 (or the disc you want) is at the top: I mistakenly thought they'd apply some logic when I first joined, so imagine my disgust when the first delivery arrived and it was disc 2 and 3 of 24 Season 3
They aren't bad though really, I just find Screen Select more user-friendly, and generally they're a little faster.
Monthly rental schemes is where I will stay though, I will only buy DVDs if they're ones I REALLY want and know I'll watch them again. Too many titles sit on my shelf unwatched atm, or watched once, only to collect dust in the future...
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